#include <iostream>
/* using namespace std; */
using std::cout;
using std::endl;

int num = 100;

void print(){
    cout << "hello" << endl;
}

namespace 
{
/* void printf(const char * pstr, int x){ */
/*     cout << pstr << endl; */
/*     cout << x << endl; */
/* } */

int num = 200;

void print(){
    cout << "world!!!!!" << endl;
}

}

void xout(){
    int a = 190;
    printf("%d\n",a);
}



namespace wd
{
int num = 1000;


void print(){
    cout << "world" << endl;
}
}//end of namespace wd


void test0(){
    cout << ::num << endl;
    ::print();
    xout();
}

int main(void){
    test0();
    return 0;
}
